One summer night, sixth-year medical student Natsume Toru is propositioned by Shinozaki Aki. He coldly brushes her off and tells her to look for someone with money. Several days later, while on duty at Keiyu University Hospital, Toru comes across Aki once more. It turns out that she is the sister of Shinozaki Jun, Toru's first official patient. Jun is waiting for a costly operation and in order to pay for it, Aki has been forced to sell herself on the streets. Toru falls in love with Aki, but wi...